This converter converts TTL signals to RS232 signals, supporting full-duplex communication. It is compatible with TTL/RS232 standards and can handle TTL signal levels ranging from 3.3V to 5V. It has built-in anti-reverse and over-voltage protection for the power supply interface, providing safe and stable work on your next project.
The unibody power supply isolation provides a stable isolated voltage, eliminating the need for an additional power supply for the isolated terminal. Additionally, the unibody digital isolation improves signal isolation, providing high reliability and strong anti-interference capabilities. The device is designed for low power consumption, making it an efficient solution for a variety of communication projects.
Features
- Compatible with TTL/RS232 standard, converting the TTL signal into RS232 signal, supports full-duplex communication
- Compatible with 3.3V ~ 5V TTL signal level, provides anti-reverse and over-voltage protection for power supply interface
- Unibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal
- Unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
- TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, lightning-proof & anti-electrostatic
- Protection diodes, ensure the current/voltage stable outputs, provide over-current/over-voltage protection, improve shockproof performance
- Power supply screw terminal, allows 3.3V~5V DC input
- Industrial rail-mount ABS case design, small in size, easy to install, and cost-effective
Specifications
| Power Supply Interface | Power supply | 3.3V ~ 5V |
| Protection | Over-voltage, reverse-proof | |
| Device Port | TTL/RS232 standard compatible | |
| TTL | Connector | Screw terminal |
| Transmission distance | About 10m | |
| Transmission mode | Point-to-point | |
| RS232 | Connector | Screw terminal |
| Protection | TVS diode, surge protection & ESD protection, power isolation and signal isolation | |
| Transmission distance | About 15m | |
| Transmission mode | Point-to-point | |
| Indicators | PWR | The red power indicator lights up when there is a power supply connection and voltage is detected |
| TXD | TX indicator lights up when the TTL port sends data | |
| RXD | RX indicator lights up when the TTL port receives data | |
| Appearance | Case | Rail-mount ABS case, suitable for 35mm DIN rail |
| Dimensions | 91.6 x 8.7 x 23.3mm | |
Resources
- Product Wiki
Pinout

| Top Side Screw Terminal | |
| VCC | Power Input |
| DC 3.3V~5V power supply | |
| GND | Ground / TTL signal ground |
| TXD | TTL transmit data pin |
| RXD | TTL receive data pin |
| Bottom Side Screw Terminal | |
| SGND | RS232 signal ground |
| TXD | RS232 transmit data pin |
| RXD | RS232 receive data pin |
Package Contents
- 1x TTL To RS232
- 1x Screwdriver



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